Machine for operating on insoles



July 25, 1944. E. E. SABIN 2,354,333

MACHINE FOR OPERATING ON INSOLES Filed Feb. 8, 194: 5 Sheets-Sheet 1 y 1944- E. SABIN 2,354,333

MACHINE FOR OPERATING on INSOLES Filed Feb. 8, 19431 3 Sheets-Sheet 2 July 25, 1944. t E. E. SABIN 2,354,333

MACHINE FOR OPERATING ON iNsdLEs Filed Feb. 8, 1943 s Sheets-Sheet 3 gw i; Mee q z;

Patented July 25, 1944 UN TED STATES? PATENT OFFICE Ernest E. Sabin, Beverly, Mass, assignor to United Shoe Machinery Corporation, Fl'eminga ton, N. J., a corporation of New Jersey Application February s, 1943, Serial No. 475,0 1

8 Claims. (01. 12-20) This invention relates to machines for operating on insoles and particularly to machines for applying a folded strip to rounded insoles. In the manufacture of some shoes of the welted type, a sewing rib is formed on the insole by cement attaching to the marginal portion of the insole one fold of a longitudinally folded strip. An all-over reinforcing layer is then cemented to the insole as well as to the free portion of the folded strip. which, together with the margin of the reinforcement, is turned to an upstanding positionto provide a sewing rib. I

' Objects of this invention are to fold the strip alongits central portion so that its edges will be flush with each other and to so apply the strip to the insole that the part unattached to the in sole will have little tendency to assume an uprightzposition which would interfere with the application of the all-over reinforcement.

The illustrated-machine is provided with a' hollow frusto-conical folder having therein an abutment or. wall extending from one side diametrically of the cone but stopping before it reaches the other side. The perimeter of the small end of the-cone, measured from the wall aroundthe periphery to the wall,.is equal to the width of the stripso-thatas the strip is drawn through the cone-it will, engage the periphery of the small end of the cone with its edges abutting the wall or abutment. This locates the edges of the strip in a; definite position so that by merely flattening the strip it becomes folded along its longitudinal center line. To, apply the strip to the insole, a of power-driven feed rolls are provided which receive the strip from the folder and apply it in folded and flattened condition to the margin of the insole. To provide suitable feeding traction for-the insole, the peripheral portion of the lower roll at least is madeof rubber or the like and the upper feed roll which engages the free half of so theifolded. strip is preferably knurled to give it feedi-ngtraction on the strip. If both rolls were drivenat the same peripheral speed, itwas found that. the folded strip, after leaving the machine, tended to react and assume a position so nearly upright that it interfered with the placing of the all-over reinforcement upon it. In the illustrated machine this undesirable condition is overcome by increasing. the peripheral speed of the upper roll relatively to that of the lower roll. Thus the upper feed, roll tends to crowd the strip ahead of thelower, rollwhich controls the feed of the insole and the effect of the tension on the strip, due to. its being, drawn from a reel and through strip reacts very little and doesnotinterfere with the application of the all-over reinforcement. I

In the drawings,

Fig. 1 i a perspective View, partly in section, of the forepart of an insole after applicationof the strip by the machine; m

Fig. 2 is a sectional View of the insole after an all-over reinforcement has been applied;

Fig. 3 is a similar view of the completed insole Fig, 4 is a perspective view of the machine Fig. 5 is a plan; view, partly in section, of the operating instrumentalities of the machine;

Fig. 6 is an end view of the folder;

Fig. 7 is a perspective skeletonized view of th roll. driving and controlling mechanism;

Fig. 8 is asectional view on the line VIII-VIII of. Fig. 5; I

Fig. 9 is a view similar to Fig. 1 showing the machine equipped with means for shifting the position of the folder during the operation of. the machine; 3

Fig. 10 is a plan View of the operatinginstrumentalities of the machine when in operation;

and

Fig. 11 is a perspective. view of an insole to which the folded tape has been applied by use of thefolder-shifting mechanism.

The machine is for folding and applying a strip A (Fig. 1) to an insole. B. After this operation, an all-over reinforcing piece of canvas orthe like C is applied to the insole (Fig. 2), and then the free half of the strip A and the marginal portion of the, reinforcement C are raised to an upright position (Fig. 3) to form-a sewing rib on the insole. Usually only the forepart of the in sole is so treated, the shank-and-heel part of the upper being lasted over upon the unribbed part of the insole in a usualmanner.

The drawings illustrate (Fig. 4) a bench ma chine whichcomprises a frame Hi upon which is mounted a reel 12 for the strip A. Thestrlp passes through a yoke l4 between the arms. of which a roll it is mounted on a bolt l8 and. held by the same bolt to a bracket 20 secured at 22 to a part of the machine to be later described.

From the roll l6 the strip is led to a hollow frusto-conical folder 24 through which it is passed; Attached to one; side of the folder (Fig. 6) is an abutment or partial partitionlfi. which extends inwardly of the folder diametrically thereof but not completely to the opposite side, space enough-being left-between the-free edge of the partition and the inner surface of the folde the-folder, isso. reduced thatthe free half ofthe 5;! t receive. strip The fold r 247 is secured. m

a bracket 28 having a slot 30 through which passes a screw 32, the screw being threaded into a slide 34. By loosening the screw the folder may be adjusted perpendicularly to the edge of the insole to locate the strip properly with respect to the edge of the insole. The slide 34 is mounted for movement toward and from the upper feed roll 36 and is held inadjusted position by a screw 38 passing through a slot 40 in theslide. To l-,

cate the edge of the insole B with respect to the folder 24 and the strip-engaging roll 36, an edge gage 42 secured to the frame at 44 is provided.

The inner periphery of the small end of the folder 24, measured from one side of the partition 26 around the periphery to the opposite side of the partition, is substantially equal to the width of the strip so that as the strip is drawn through the folder its edges are gradually moved At least the peripheral portion of the roll46 is preferably of yielding material such as soft rubber to provide traction for feeding the insole and is fixed to a shaft 48 (Fig. 7) mounted in suitable bearings in the frame II]. On the rear end of the shaft 48 is a gear D with which a pinion 52 meshes. The pinion is fixed to a shaft 54 on which also is a disk 56. Theshaft 54 is mounted in suitable bearings in the frame I0, and loose thereon is a pulley 58 having one flat face opposed to the disk 56, a friction disk 60 bein provided between the disk 56 and the pulley 58 so that the pulley will drive the disk when pushed to the left (Fig. '7) the pulley being driven by a belt 62 from any suitable source of power.

A three-armed lever is fulcrumed to the frame at 64 and has an upstanding arm 66 and two horizontal arms 68, I0. The upstanding arm 66 carries an adjusting screw 12 to engage a button on the center of the hub of the pulley 58. One horizontal arm 68 of the lever is connected by a link I4 to an intermediate portion of a treadle lever I6 fulcrumed at 18 to the floor so that depression of a treadle 80 will operate the angle lever 66, 68 to set thefriction clutch 56, 58, 60 and drive the lower feed roll 46. The arm I0 is connected by a link 82 to an arm 84 of a lever pivoted at 86'to the frame,and to raise the treadle and release the clutch a strong tension spring 68 is connected atone end to the link 82 and at the other to the frame I0. The lever pivoted at 86 has a forwardly extending arm 90 which forms a carrier for the upper roll 36 and a housing for its driving mechanism. The roll 36 is fixed to a shaft 92'journ'aled in the arm 90 and having on its rear end a pinion 94 which meshes with an intermediate gear 96 which, in turn, meshes with a pinion 98 on a shaft -I00. The rear end of the shaft I00 carriesagear I02 which meshes with the gear 50 which, through the connections described, drives the upper feed roll 36 as well as'the lower roll 46, the rolls 36, 46 being driven in opposite .directionsto' advance the work between them and the peripheral speed of the roll 36 being slightly in excess of that of the roll 46. To press the roll 36 into contact with the work, the arm 90 is depressed by a plunger I04 mounted for vertical movement in the machine frame over the arm 90, the plunger being forced downwardly by a spring I 06 the tension of which may be controlled by an adjusting screw I08. The spring 88 is strong enough normally to overcome the spring I06 and maintain the roll 36 raised from the 11011.46. .The fulcrum 86 is so located above the gear 50 that tlie slight movement of the arm 90 to'permit the necessary separation of the rolls to receive the work does not substantially disturb the meshing relation of 1 the gear 50 with the pinion I02.

A lost-motion connection is provided at H0 1 between the link 82 and the arm 84 so that slight variations in position of the arm 66 when the clutch is set will not affect action of the spring I06 upon the roll 36.

Under some conditions it is desirable to attach a folded strip to the insole beginning at the breast line and proceeding along the shank aroundthe forepart to the breast line again. In this case it is desirable to. locate the folded strip farther inwardly from the edge of the insole'in the shank portions than at the forepart. Hence, means is provided for shifting the folder laterally with respect to the edge gage 42, as shown in Figs. 9 and 10.

The bracket 28 to which the folder is secured is formed as a slide II2 (Fig. 10) dovetailed into the slide 34 so as to be movable horizontally relatively to the edge gage 42 against which the insole is held. The slide II2 carries a pin II4 engaged by the forked end of an arm I I6 of an angle lever pivoted at II8 to a bracket I20 secured at I22 to the frame I0, the other arm I24 of the angle lever serving as a handle for moving the folder. The arm I24 is normally held by a compression spring I26 against a stop screw I28 which determines the location of the strip A when it is being laid around the forepart. When the shank of the insole is reached, that is, at about the point shown in Fig. 10, the operator pushes the arm I24 against the spring I26 until the arm engages a stop screw I30 which is so adjusted that the strip will be laid at the proper distance inwardly of the insole along the shank portion. Of course, in starting the operation at the breast line, the arm I24 will be pushed against the stop I30, but when the ball is reached it will be released and will be moved back by the spring I26 against the stop screw I26 while rounding the forepart, being pushed in again when the second side of the shank is reached, as above described, the result of the operation being as shown in Fig. 11.

Having thus described'my invention, What I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for applying cemented strips to insoles, the combination of means for folding a strip along its longitudinal center line, means for presenting the folded strip with its edges flush and with said edges in predetermined relation to the edge of an insole, means for feeding the insole, and separate feeding means engaging'the folded strip.

2. In a machine for applying cemented strips to insoles, the comb-ination'of means for folding a strip along its longitudinal center line, means for presenting the folded strip with its edges flush and with said edges in predetermined "relation to the edge of the insole, means for feeding the insole,' separate feeding means engaging the folded'strip, and meansfor crowding' the strip to insoles, the combination of means for forming I in the direction in which the insole is fed to cause the folded strip to lie flat.

3. In a machine for applying cemented strips to insoles, the combination of means for feeding an insole, means for folding a strip and presenting it with its edges together adjacent to the surface of the insole, and means for flattening the strip upon the insole with its edges flush and disposed adjacent to the edge of the insole, said flattening means being driven so as to crowd the strip forwardly in the direction of feed of the insole while pressing it thereon.

4. In a machine for applying cemented strips to insoles, a driven feed roll for engaging one face of an insole, a driven roll for pressing a strip upon the insole, means for folding the strip and bringing its edges substantially together before presenting it to the strip roll, and means for driving the strip roll at a peripheral speed in excess of the peripheral speed of the insole-feeding roll.

5. In a machine for applying cemented strips to insoles, the combination of means for folding a strip along its longitudinal center line, means for presenting the folded strip with its edges flush and with the said edges in predetermined relation to the edge of an insole, means for feeding the insole, and means for simultaneously pressing the strip against the body of the insole and crowding the strip forwardly in the direction of feed to reduce substantially the tendency of the folded strip to open up due to tension applied to the strip in drawing it through the folder.

6. In a machine for applying cemented strips a strip into a tube with its edges close to each other and presenting saidtube in predetermined relation to the marginal portion of the insole, means for feeding the insole, and means for simultaneously flattening the strip against the insole and crowding the strip forwardly in the direction of feed.

'1. In a machine for applying cemented strips to insoles, the combination of a tubular folder for forming the strip into a tube with its edges close to each other and presenting said tube in predetermined relation to the marginal portion of the insole, a feed roll for feeding the sole continuously, a feed roll for flattening the tubular strip against the insole, and means for driving the strip-engaging roll at a peripheral speed in excess of that of the insole-feeding roll.

8. In a machine for applying a cemented strip to insoles, the combination of a frusto-conical tubular folder for the strip, an abutment inside the folder at one side thereof, the periphery of the small end of the folder measured from the abutment around the periphery of the folder to the abutment being equal to the width of the strip whereby the strip is formed into a tube, the edges of the strip being separated by the abutment, means for supporting and feeding the insole, and means for flattening the tube as it emerges from the folder against the insole with the edges of the strip flush with each other and disposed in pre- ERNEST E. SABIN. 

